Dentiphone for phonographic use



Jan. 4, 1927.

w. c. MOCLAIN DENTIFHONE FOR PHONOGRAPHIC USE Filed May 27, 1924Patented Jan. 4, 1927.

UNITED STATES WADE C. MCCLAIN, OF LITTLE ROCK, ARKANSAS.

DENTIPHONE FOR PHONOGRAPHIC USE.

Application led May 27,

This invention relates to a dentiphone or audiphone for use by the deafin order that the sounds from a phonograph or the like may reach theauditory nerve through the teeth and bones of the head.

It is aimed to provide a novel, simplified and efficient construction toattain the purpose stated and particularly one which has a stylussecuring means of the form or its equivalent, as hereinafter disclosed.

An operative embodiment is shown in ac companying drawings, whereinFigure 1 is a View in perspective showing the invention as used inconnection with a phonograph Figure 2 is a view in perspective, showingthe parts at the stylus end, disassociated;

Figure 8 is a cross sectional view taken on the line 3 3 of Figure 1 andthrough the stylus securing means;

Figure 4t is a vertical sectional View passing through the stylussecuring means; and

Figure 5 is a perspective view ot the mouth end of' the device.

Like reference characters designate like or similar parts in thedifferent views.

In carrying out the invention, a soundtransmitting element is providedof suitable length, preferably being made from highly tempered springsteel. This element at one end carries a stylus 11 adapted to coact withthe sound groove of a record conventionally shown at 12 and over whichan arm 15 is movable to permit the usual movement of the stylus 11, thatis to say, the arm is swiveled so as to move both vertically andlaterally.

lhe end ot the element 10 which carries the stylus 11 has spaced lugs 16and a lug 17 spaced from the same and located intermediate them. Thestylus 11 is removably secured in a socket 12 of the holder 18 as by aset screw 19, in .such manner that the stylus will directly contact withthe element 10. The upper end of the holder 18 is bifurcated to providea slot 20 which receives the lug or projection 17. A movable bridge bar21 transversely crosses the holder 18 and then passes intermediate thelugs 16 and 17 and has its terminals engaged against said lugs 16 at theopposite side of the element 1() through its intermediate portion whichengages the holder as aforesaid. Securing screws 22 pass through holes28 in the Outer terminals of the bridge bar 21 and then through notches24 in the outer edges of the 1924. Serial No. 716,238.

lugs 16. Said screws 22 not only serve to clamp the bridge bar in orderto in turn clamp the holder to the element 10, but they clamp the bridgebar and element 10 together and also fasten them to the arm 15,preferably to an extension 26 of a head 27, which may be removablycarried by arm 15 being fastened thereto by screws or the equivalent 28.

The mouth end of the element 10 may be thickened as at 2S) and thethickened portion thus provided is adapted to be held in the mouth ofthe user and firmly engaged by the teeth. To prevent accidentaldisengagement of' the teeth, the portion 29 at its distal end ispreferably provided with a continuous lateral fiange 80.

The element 1() obviously may have branches each equipped with theportion 29 and a flange 8O to enable simultaneous use of the device by anumber of' persons.

In use, with the stylus 11 arranged to travel in the usual manner inrespect to the sound grooves of' records .such as 12, the portion 29 isheld in the mouth, firmly engaged by the teeth of the user. As thestylus 11 is in contact with the element 10, the vibration imparted tothe stylus by the sound groove will in turn be transmitted to theelement 10 and from the latter through the teeth and bones of the headto the auditory nerve. As a result, the device is particularly adaptedfor use by deaf persons so that they may hear and enjoy the playing ofphonograph selections.

It is to be understood that I have used the term plionograph in itsbroadest sense and as thus including analogous devices or specificphonograph adaptations such as,

commercial talking machine records.

Various changes may be resorted to provided they fall within the spiritand scope of the invention.

What is claimed is 1. In combination the swiveled arm of' a talkingmachine, and a head on .said arm, a sound transmitting element adaptedfor contact with the teeth of the user, a bridge bar secured to saidhead and engaged by said element, and a stylus carried by said elementand adapted for coaction with a sound record.

2. In combination with the swiveled arm of a talking machine, and a headon said arm, a sound transmitting element of resilient material adaptedfor contact with the teeth of the user, a bridge bar secured to saidhead and engaged by said element, and a stylus Carried by seid elementand adapted for coaction with a sound record.

3. A device of the class described havingI a sound transinitttingelement adapted for engagement with the teeth, a stylus holderbifurcated to straddle L portion of the element, n bridge bnr disposedacross said holder, und means to secure said bridge bar and holder to esupport, the last mentioned means serving kto clamp the holder to theelement.

d. A device of the class described having n.

sound transmitting element adapted for engagement With the teeth, saidelement having three lugs at one end,A :i biturcated stylus holderstrad'dling the intermediate lng, n bridge bnr disQosed across saidholder and passing intermediate the lugs so as to engage the outer lug`at the reverse side or' the element to that of its bridge portion, andles tening means passing' through the bri dg@ bnr adjacent. itsterminals engaging seid elei'nent and adapted for connection to nsupport.

In testimony whereof I affix my signature.

WADE C. JQGLUT.

